Thousands of varieties of plants are rapidly disappearing in the United States, especially non-hybrid types of garden vegetables. These are called heirloom varieties, and they're
difficult, if not impossible, to buy from commercial sources. The seeds are instead often passed from gardener to gardener, often in families, and they represent an irreplaceable
genetic heritage that is being lost. Producer Neenah Ellis examines the reasons these seeds are disappearing and the efforts underway to preserve them.